Judith Wambura Mbibo (born June 15, 1979), known by her stage name Lady Jaydee (stylized as Lady JayDee in town and at times Lady Jay Dee), is a Tanzanian singer.
She specializes in the R&B/Zouk/Afro Pop genres.
Lady Jaydee was voted Best Tanzanian Female R&B Artist in 2002, performed at the Kora All Africa Designers Competition, and was awarded "Best R&B Album" at the Tanzania Music Awards on August 6, 2004.
In July 2005, she won an award for "best female video for South Africa".
She was among the first females to sing R&B in Swahili.
Lady Jaydee is signed to one of Africa's most successful music labels, Taurus Musik.
She is also known as the Queen of Bongo Flava (Tanzanian Music).